CALIFORNIA REDWOOD ASSOCIATION
Ciihfenua R I ssot iation
T-inch surfaced and matched R uilt around brine fife in i room of
Cold Storage Co., San Fram ago. Temperature of pi
rot 80°. Frost on U box is gradually / box out i
/ great q e in ten matures on opposite sides of this i-inch re
r a nsulation of J is sh vn by absen, f frost on o ide of b<
Specialty Uses of California Redwood
Insulation — Ice Houses
\ \;iv manufacturer of silos in the
East, one of the pioneer concerns in
the use <>i Redwood for sili makes
tli' statement that 2 inches of Red-
\\'".(| j^ equivalent to 30 inches of
concrete in insulating power. This
manu :turer has studied Redwood
tt roughly from t i 1 i -» angle for the
reason that the success of a silo de
pends upon the non-conductivity of
the silo wall — as dissipation of the
natural heat of the -.ilage through
the silo wall increases the per cent of
Redwood in growth structure is
porous, and, when studied under a
microscope, looks very similar to a
comb of honey between the dark an-
nular rings. Every one of these mil-
lions of cells in the growing tree is
full of sap, but when the tree is cut
into lumber the lumber must be "sea-
WILL NOT SHRINK, SWELL OR WARP
snned" or dried, before it goes into
commercial use. This "seasoning"
process consists merely of evaporat-
ing the natural moisture out of these
cells. Each cell, therefore, becomes a
dead air space.
The cellular make-up of Redwood
is uniform both in the thickness of
the cell wall as well as the size of the
cell. It is plainly evident, therefore,
that heat applied to one side of a
piece of Redwood, to travel through
the Redwood must pass through a
thin cell wall, then a dead air space,
then another cell wall and then an-
other dead air space, and so on. Heat
passing through this combination
Prof. L. J. Towne, of Columbia
University, gives the relative power
of conduction as I to 20 between
wood and stone, cement or cla}
products. This means that stone and
' • lent are 20 times a better medium
fur the conduction of heat or cold
than is wood. The millions of dead
air cells between the annular rings
f Redwood are what give Redwood
it^ insulating power.
Manufacturing plants on the Pa-
cific Coast use Redwood as a substi-
tute tor cork board for insulating.
There are Mime splendid examples
of Redwood's insulating power, as
well as its remarkable longevity un-
der the most severe service. in the old
plant of the National Ice and Cold
Storage Company, at Kentucky and
Division streets, San Francisco.
This -'lant was built in 1902 — 15
years ago — and Redwood was used
throughout. The system of brine
piping is encased in Redwood boxes
made of one-inch matched and sur-
faced Redwood. Xearlv all of these
insulation boxes are still in use. The
temperature in the brine pipes is 6
p-ees above zero, and they have
gradually built up around the pipe,
inside of the box, an incrustation of
frost that completely fills the box. In
spite of the fact that the temperature
of the inside of these insulation
boxes is 6 degrees above zero, and
the temperature in the engine room
of the plant is 80 degrees, there is no
shrink, warp, swell, twist or check in
these boxes, nor is there any gath-
ering of frost on the outside of the
box which would indicate free con-
ductivity through the wood.
Not only this plant, but most of
the ice houses on the Pacific Coast
use Redwood as lining for cold stor-
age and ice rooms. In the plant above
referred to there are ice storage
rooms that have been in continuous
use for 15 years, and where Red-
wood has been incased with frost
and ice for that period, and in spite
of this severe service these rooms
are thoroughly air-tight — the joints
of the wood are tight.
Redwood possesses a number of
qualities that make it highly prefer-
able for roofs, and particularly in
factories where there is humiditx
and condensation to contend with. It
has been found particularly service-
able in connection with the so-called
"saw tooth'' type of roof.
In many kinds of business such as
cotton mills, paper mills, etc., where
there is humidity or rising steam,
there is trouble with condensation
that drops back onto the products
handled and creates a manufactur-
ing loss. This is due to the fact that
the roofing materials do not prop-
erly insulate the sharp differences in
temperature between the exterior
and interior, and particularly where
there is severe cold weather.
Cooling tower made of Redwood frames and lattice at plant of A al
Ice and Cold Storage Co., San Francisco
Redwood's natural resistance to
d( under moisture or humidity
gi\« - it .t maximum of life, while it-
mil- in resistance to the attack of
a> i' or alkalis, or the fumes of
« hi mil als makes it preferable in
i as< here >uch conditions prevail.
It i- light in weight and sufficiently
strong under proper design.
Redwood also possesses the neces-
sarj attribute of holding its shape —
when wet it does not swell and. when
again dried, does not shrink percep-
tibly. Redwood is not sensitive to se-
vere changes of temperature or at-
mospheric conditions which set up
counteracting strains in wood. It can
be depended upon to hold its shape
when one side is subjected to freez-
ing and the other to heat or humidity.
Redwood is a thoroughly satis fac-
tor) surface to paint. Its porosity af-
fords a firm grip for the paint and
makes it possible to get a thorough
coverage. As Redwood, when thor-
oughly dry, is subject to a minimum
of movement in the wood itself un-
der varying conditions of heat or
moisture, there is a minimum ten-
dency to check the paint film from
WILL NOT SHRINK, SWELL OR WARP
It is not neces-
sary to subject
Redwood to artifi-
to give it durabili-
ty — it possesses a
that r e s i s t s rot
both in contact with
water, moisture or
humidity, or sub-
jected to conditions
of heat or dryness,
or severe alternat-
ing dry and moist
■ editions. Red-
wood can be denied
ventilation by seal-
ing in metal, and
under condition-- of
this kind it has a
high resistance to
dry rot ; this same
resistance to dry rot
1- present even it the
wood is not denied
In Redwood, as in
other woods, the
heart stock will last
longer than the sap.
There is a sharp distinction between
heart and sap in Redwood, as the
natural color of the heartwood is a
soft reddish-brown, while the sap-
wood is white. Redwood sapwood,
however, is a- durable as any other
soft wood when painted.
Ice st( \ge room of
Xur>t.rymen on the Pacific Coast
have for years recognized the supe-
rior service of Redwood for green-
house purposes, and a number of
uilders of greenhouses and green-
house appurtenances in the East are
Motional Ice and Cold Storage Co.. Son Francisa
i < the room is air tight and the Red-
lining and timbt are free from ecay
also enthusiastic advocates of Red-
Redwood's remarkable durability
in contact with moist soil, and the
fact that it is unaffected by sudden
changes in temperature or atmo-
spheric conditions, make it highly
preferable for sash bars and mun-
tins. (ilass laid on Redwood green-
house moulding does not become
loose, rattle, and shatter because of
decay in the moulding.
Redwood makes a 'stay -tight
joint, and therefore a leak - proof
glass roof. Redwood does not swell
perceptibly when wet, nor shrink and
twist when again dried.
'to rot when in couta* I moist earth it is used for the boxes
wilt up the fatuous mbryanthi m h at the Panama! International
Exposition, San Fran 5
ft is the most lasting and durable
wood thai can In used for benches.
propagating boxes, lattice, "cold
forms," "hoi beds/' etc.
Redwood does not have to
be treated to give it durability
in contact with the ground;
neither does it swell nor twist
out of shape because the inside
of the propagating box is in
contact with wet ground and
the exterior is dry.
It resists attack by insects, and
does not develop fungus growths.
The use of Redwood about the
reenhouse insures a maximum ser-
\ ice, as well as being the easiest wood
to work and the most satisfactory
material to handle.
Redwood in the greenhouse cuts
the repair bill to a minimum.
The following letter from the vice-
president of the King Construction
Company, North Tonawanda, N. Y.,
one of the largest designers and
builders of greenhouses in the coun-
try, shows how highly they regard
Redwood for greenhouse purposes:
North Tonawanda, N. Y.,
Feb. 19, 191 7
California Redwood Assn.,
San Franco • alifornia.
Gentlemen: We note by the little
circular which you enclosed with your
letter of February 13th that you show
a couple of greenhouses which we
built at Newton Falls, Ohio, these
houses having been built throughout
by our company of California Red-
Perhaps you would be interested in
knowing why we use Redwood for
We have tried various kinds of
woods that we thought might be suit-
able for greenhouse work for the past
20 years, and we have found Redwood
WILL NOT SHRINK, SWELL OR WARP
ryanthemun\ hedge at Pana> ! an t >i
rot-resisting qu md th > sta >i to
tt ' eq d i
r the Bottiural G ns at the Panama-California Expos m t San Diego,
as used in this perma nt I Iding because of its ability
to withstand s* re service of th\ e
i the most durable and service
■ 1 » 1 1 of au\ i if them.
i Thai it i> less subject to decay
in th< evere conditions of heat
and moisture existing in a
j That ii is less liable to warp
and I wist than nthcr woods.
3 I hat it does not shrink or
4. That it runs more uniform
i: lit grain than the next
best mkI, which we consider
v I hat ii takes paint much better
and the grain does not raise.
6. I hat it is much easier to de-
n-i t and eliminate the sap on
a< unit of the heart wood be-
ing red and the sap wood white,
whereas in other woods this
difference in color is not no-
ti able so much.
7 That it has invariably been sat-
isfacti >r\ to all our trade.
We would be glad to answer any
questions from any of your customers
giving further details of our peri-
1 ours very truly,
(Signed) E. P. Lovejov.
Vice-President and Gen. ) ^er.
Redwood lath have given most sat-
isfactory service for many years ; the
fire-retarding property of Redwood
giving lath of this material a de-
cided advantage over the ordinary
kinds. For best results the rough coat
of plaster should be allowed to dry
thoroughly before applying the fin-
The Eureka High School, erected
at Eureka, California, is a recent in-
stance of the use of Redwood lath
in a building of the most modern con-
WILL NOT SHRINK, SWELL OR WARP
/?' for this | . St. Paul, Mini I
( i Shtll ( ffin$> and
Bui \a\ Box
\wv\\ i en 1 o I t h < in i ■ I
(ill in lu ooc| i
! . i * .1 ! |)| tl hu i
l ! |.M! I I i
1 1 | >■ i i > l lh« * [ > I
1 1 1 i \ i - \ i i I
i i 1 1 ... 1 1 1 1
1 1 < I VI i I > fti n
I Ml I I I I m . It i m in |r< | U|M)
i r i v v a r s
M ; 1 1 1 1 1 1 ; 1 1 ■ ■ I ■ - 1 1 1 I 1 . it i ■ I i > U 1
I I ' |'l> I I . • m . f I !
I i i . i n 1 1 i \ ■ i i'i h
iii.I i. i join( I
<l .ip.ii in ' I'I 1
i. i at ca
1 I caskrl
I. .i i mi
i I and
U I fry Gai nment
In ■ i • ■ I
pi m to
1 1 1 1
t . r
1 I • ni > < ioi em
nti ' H <
w most of wl ha nt
i tl . ^ in ii
l! I | K «l
! I I
A fi m abator
Brooders and Incubators
Manufacturers using Redwood for
incubators and brooders are enthusi-
astic over its perfect adaptability.
An incubator, because of the dif-
ference in tempt ratine between the
interior and the exterior, requires a
wood that holds a tight joint, is un-
affected by differences in tempera-
ture, or alternating wet and dry at-
;ht joints keep out drafts and
give a higher working efficiency to
Redwo- ><Ts insulating ]>< >\\ er. its
light weight, the ease in working, it^
resistance to rot a 1 tire, as well as
its splendid surface to take and hold
paint, are additional fax orahle fac-
The following letter from the pres-
ident of the Petaluma Incubator
Company sei^ forth the experience of
one of the largest manufacturers of
incubators and brooders in the coun-
Petaluma, Cal., Sept. 30. 1916.
Edwin K Myers, Sec. Manager,
California R< dwood Association,
E)car Sir: Before coming to Cali-
fornia the writer used pine and other
woods grown in Canada, but on com-
ing to California Redwood was the
most convenient to secure, and it
proved to be a very happy result, for
the Redwood used in these goods
never shrinks or swells, and hence
when we make good close joints to
begin with, it remains so. Incubators
made by us nearly forty years ago
are still in use and, so far as the joints
are concerned, they are as close now
a^ when the machines were first con-
In our experience there is no wood
which has come within our range that
can equal or approach California Red-
wood for making incubators and
brooders, and 50 thoroughly were we
convinced of that, more than thirt\
five years ago, that in all the time since
we have not used other lumber.
We have found that in shipping our
nds to the Philippine Islands, Aus-
tralia, India, South Africa, South
American countries, such as Argen-
tine, Uruguay. Brazil, Peru, and Chile,
that the Redwood stands the ravages
of the insects, such as the great white
ant. These insects, which seem to en-
joy making a breakfast of other kinds
of wood, will not touch the Redwood.
In addition we have shipped to al-
most every place on the globe. Our
incubators are used in Jerusalem, in
Cairo. Egypt, in many of the islands
f the Pacific and Atlantic oceans, and
in the countries south of us, such as
Mexico, Guatemala, Nicaragua, and
even in the Canal Zone at the Isth-
mus. In some of the latter mentioned
■linns we regard the climatic con-
ditions as trying on any kind of wood.
There is no complaint, however, with
Petaluma [ni ubator Company,
L. C. Byce, President
Ice Cream Cabinets
Redwood is extensively used for the
manufacture of ice-cream cabinets.
It hah been found by actual experi-
ence to be suited for this service.
Experience is the most satisfactory
demonstrator. Read what The (
X elson R I ami factoring Co. , of St .
Louis, say about their experience
with Kedw ood :
C NELSON MFG. CO.
St. Lopis, U. S. A.. Aug. 29. 1916.
( vLiFOSNi \ Kfmv m A>sx.,
San Francisco, California.
Gentlemen: In answer to yours of
the 23rd, will state that we found
Redwood in be a better none iduc-
tor of beat and cold than any other
\\ 'd we could i^et, and, being light,
it was less cumbersome to build our
cabin from, as they have to be tak-
en in every fall and put out every
spring for service,
\\ • also find tbat by using wide
boards we have no glue joints; con-
stant moisture and sometimes freez-
ing would part these joints.
1 lit \ ;iKfi take on a beautiful finish
in almost any color desired. 1 he small
parts that have to be glued for lids
and rings bold better than other
Redwood doe-- not warp if properly
soned before it is used.
Cabinets we built 15 years ago of
Redwood, with sides 25J/2" wide, all
in one piece, come in for repairs in
perfect shape, and can be redressed
and finished to look almost like new.
We shall probably never use any
other wood for the building of Nel-
son cabinets. . . .
Fifteen years ago we built 10 cab-
inets and sold them for $100. This
year our sales will amount to some-
thing over $100,000. Fifteen years ago
it was a new proposition to the ice-
cream world. A great many thought
it an unnecessary expense, but have
since found it a very necessary ad-
junct. It is growing even year and
we never havt .1 complaint from our
Yours very truly,
( Signed) C. Nelsox Mfg. Co..
C. X el son. President.
Boxes and Chests
Redwood is excellent material for a
high grade clear box as a container
for bulky goods of light weight, such
as shirt waists, cereals, wearing ap-
A number of candy shops on the
Pacific Coast are using with great
success a small Redwood box as a
shipping container for candy.
These boxes are made of clear,
dry Redwood, and are labeled as
"wood from the k big trees' of Cali-
fornia/' This gives the box a senti-
mental value, and, as the box is neat-
ly made, it usually finds a permanent
place in the recipient's home for some
A manufacturer of boxes in the
east recently arranged for a large
amount of Redwood to be used for
shirt waist boxes. The Redwood is
cut thin, and the completed box is
covered with matting glued to the
wood. These boxes are to be used to
ship shirt waists to tropical countries.
Redwood chests are splendid for
storing wearing apparel, valuables,
etc. The ease with which the surface
can be worked for decorative pur-
poses makes it possible to produce a
handsome and extremely durable
chest that is a rapid seller. Manx
Redwood chests are decorated with a
sandblast figure. They can also be
-tained to any color desired.
Manufacturers of office filing
equipment use Redwood for hit-
transfer cases because of its light
weight and ability to hold a tight
WILL NOT SHRINK, SWELL OR WARP
Storage Battery Purposes
I f Nature had determined to grow a
wood -especially suitable for storage
battery uses, and particularly as sep-
arators, she could not have improved
Redwood meets these require-
ments satisfactorily. In fact Red-
wood is so perfectly adaptable for
battery purposes that the Electric
Storage I lattery Company, of Phil-
adelphia, Pa., has taken out letter-
patent on the use of Redwood in
their batteries, and in which patent
the following statement is made :
"The quali common to these- woods that
adapts tli< m to stor. hattery separators
inchi the property nut swelling when
wet and consequently, when again driel, of
not shrinking, v rping or twisting to an
extent that unfits them for use as separa
tors when dry or dried Drj separators of
this mat can be used without the cus-
tomary allowance for swelling when un-
it •■ o tl. ill CtrolytC Of tl ctH-rv or
soaking solution. This quality also
includes the pn of these v\ is which
i- le to tl sit) and which eau^s
n to act a- a tphragm impervious to
diment, y< I they are sufficiently
porous for - »rbing t he electrolyte and
] mitring of the free passage i current;
ami this quality inch s substantial fn
m fron is org m itter such,
i example, as acetic acid, w\ \ injuri-
I hi p itive pole plates; ami
i- v fun includes sufficient me-
cl tigth and the property of re
uig itructive action *-f the elec-
tro! \ t(
"From the fo "in« it is • i«U-nt that the
- i of this invention meet all the
requirements of use in a storage battery,
further that they an he dried even
Th "ugh they may have been previously
i I v, acid oi alkaline solutiui <»r
olio wed by washing in water, as is
. stoma r) m «. rei i some of their
?nts which \\<ml<l attack ) I <>r be
"The • l\a of dry separators over
tl iich have to be k« wef is obvi-
Th gth of the woods from which
1 make the Si paraturs is 30 great that ( n
if the s(*\ irs are treated in the man
ncr red to they "-till retain am-
ple me« il stn th for use in a r-
age hattery. However, the woods contain
so little deleterious matter ^uch as wuuM
attack lead that they can b< d wit it
any treati it at all <>r with y little
"For the >( furtbei nation it
may he E I that the r chara ris-
tic which I have discovered in the certain
woods to which reference has been made
is that they can be soaked until they are
flimsy and then dried again satisfactorily.
"I do not claim in this application a stor-
age battery separator made of woods of the
tribe TAXODINEQE, generally of the
genus TAXODIUM or of the spe s TAX-
ODIL'M DISTICHUM, since the same
forms the subject matter of my application
executed of even date herewith and seri-
ally numbered 637,532, but
What I claim is:
"i. A storage battery
wood of the genus
"2. A storage battery
se 'ator made of
separator made of
wood of the species SEQUOIA SEM-
"3. A storage battery separator made of dry
w f the genus SEQl OIA,
"4. A storage battery separator made «-t dry
wood of the sped s SEQUOIA SEM-
"5. A storage battery separator made of
treated and dry wood of the genus SE-
* 6 A storage battery separator made of
r 1 1 id dried wood of the species
SKoUOl \ SEMPER V I KKX>. M
This patent is No. 1,012,751, and
was granted December 26, 191 1.
The highest possible evidence of
Redwood's "staying-put" quality can
be found in the fact that it has been
used for years with absolute satis-
faction as a material from which pipe
organs are made.
The organ is a delicate instrument,
as the slightest leak would he disas-
trous to the tone.
The organ manufacturer cannot
u>e a wood that varies in the slight-
est, either through change in temper-
ature or atmospheric conditions, or a
Wi d that contains pitch or gumm\
substances to deaden the resonance
of the wood or leak into valves.
The following letter from the sec-
retary of the California I >rgan ( om-
pany of Los Angeles indicates the
high confidence that company has in
of R wd's non-shrinking qualify. Sound-producing
i Redwood in the magnificent pipe organ in the Fir
I Church, Del it. The slightest shrink or otl m< nt
pipes would destroy the to of the instrument!
absolute assurance that
our work is going to
i i\ "put" after com-
pletion. For instance,
a Redwood pipe does
not expand or contract
under a great variety
of climatic and atmos-
pheric conditions. This
i- extremely essential
as the cubical area < E
the pipe concludes the
pitch, mid should a
pipe move from its
fixed position an in-
strument would mo\
slightly out of pitch.
In the che^N of an
instrument \\ i find
Redwood to be of ex-
ceptional value. There
re hundreds of small
felt and leather valves,
and should the wood
exude pitch these tiny
parts would stick and
refuse to work. It is
Iso an advantage in
client work as it is
essential that these
chests should be air-
tight, and the possi-
bility of checking is
minimized in the use
of properly dried
An advantage in
favor of Redwood for
the manufacture of
I III CALIFORNIA ORGAN CO.
Los Angeles, Cal., Sept. 12, 1916.
Californi \ Redwood Assn..
San Francisco, California.
Gentlemen: In regard to Redwood
in the manufacture of pipe organs,
there are, of course, several reasons
for our using the same.
I he woods usually used in this type
of construction, or those which have
been u^ed in the past are white cedar
and sugar pine.
A governnient report shows the rel-
ative value of Redwood, white cedar
and sugar pine in the order men-
tioned, concerning the lasting quali-
ties, absence of swelling and shrink-
age, and the absence of pitch.
The principal advantage to us i- the
swell boxes and the
larger pipes is the fact that Redwood
is obtainable in any dimensions, ex-
traordinary width being demanded at
There are two other important rea-
sons. In the matter of cost, as com-
pared with the woods used by other
manufacturers in this line, the initial
price as compared to su r pine is ap-
proximately 50 per cent ; as compared
with white cedar, Redwood is slightly
lower in price and is vastly superior
to it. It also has the advantage of be-
ing light, consequently shipping rates
are greatly reduced.
In closing we beg to advise that we
have delivered instruments construct-
ed of Redwood from Xew York City
WILL NOT SHRINK, SWELL OR WARP
across the continent to Honolulu, and
have absolutely no difficulty with Red-
Verv truly yours,
< Signed I The Calif* rnia Organ Co
A. E. Streeter, Secretary.
Light weight, absence of shrink,
warp and swell, together with resist-
ance to rot when damp or encased in
metal and denied ventilation are
bringing Re lw ood rapidly to the
front as the best wood to he used a>
hand- for large clock- in public build-
Most of these chick hands are cov-
ered with cupper or bronze.
A in i al >le example of Redwood
clock hands is that on the Custom
House, liostmi. The minute hand i
[6 ft. long, and weighs 141 lbs. The
hour hand is 12 ft. long and weighs
I 12 lbs
The following letter from the E.
Howard < lock Company, Boston,
Mass., who built and installed the
1 lock, 1- an unquestioned testimonial
of Redw ood's splendid adaptability
for this pur] m >se :
P.< »>ti m, Mass., Jun< 22, 1916.
CaLIFOEN l \ ReDWooD \ssn .
51 a hall lluilding,
S; 11 Francisco, Calif rnia.
Gentlenn In reply to your secre-
tary's inquir) of the 7th inst., would
sa> that tin- reason we selected Red-
wo for th< Boston Custom House
Clock h.md- is because of its * Ktreme
lightness, which in this instance was
\ erj important.
In addition to Wing \rr\ lar.
hands, the Government *\n ications
required 1 hat the) should be complete-
]> metalized, or, as w< II it, armor
Because of the four pairs of hands
i«»r that clock having prow d vi-n
is fad ry, we use Redw< >od
in the future. We agree with you
Redwood was u, for the clock hands on the
ustom House, Boston, bt of the well-
it resistance to rot and light 1 f the
k the "hig trees of California
that Redwood is a very desirable ma-
terial, but of course it \< quit expen-
sive and it has to come from a very
We enclose two reprints from th
Architectural Review, relating to tl
particular clock, which we would b
glad to have yon put up in the room-
of your As ciation.
Yi ry res| ctfnl >urs,
Thk I lOWABD C) K Co.,
By K A Bigelow. Treasurer
4. Will not "wet" rot due to mois-
ture from sweating metal.
e-proof dor* showing Redwood core used un-
der the metal covering. Approved by the h ■
I Underwriters Association
Redwood is one of the four woods
specified by the Fire Underwriters
Laboratories as a material from
which fire-door cores should be built.
Of these four woods Redwood is
the first preferred, for these reasons:
1. Natural resistance to fire be-
cause of slow ignition and
2. Absence of pitch, resin, or
other inflammable elements.
3. Dc^ not dry rot when denied
5. Liijht in weight, strong, and
easy to work.
6. Aiwa) - hangs true, and is not
affected by swelling or
shrinking in the core by rea-
son of moisture or dampness
that might penetrate through
steaming, sweating, etc.
The following letter from a large
Pacific coast manufacturer of fire
doors is based on years of practical
I'M I -"in I OS ANGELES STREET
Los Angeles. Cal., Aug. 16, 19 16.
Caliform \ Redwood Ass \ ,
San Francisco, Cal.
Gentlemen: In reph to vour letter
of August 15th.
There has been much discussion on
the relative merits of various soft
woods to be used in the construction
■ »f fire doors.
In my experience I find that Red-
wood is the best wood in all cases, it
having, you might say, no pitch in it,
which makes it almost non-burnable.
Also, it does not dry-rot when en-
closed by metal and denied ventila-
Most woods I have noticed that are
incased in metal will sooner or later
dry-rot. and I ha\c noticed a number
of doors after having been enclosed
for seven or eight years were reduced
to a scrap or junk through dry-rot.
We are the largest manufacturers
of fire doors on the coast, and we have
never had one complaint about our
material going bad. In fact, in the
course of a change in one of the Pa-
cific Telephone Buildings in San Fran-
cisco, the engineer in charge cut one
WILL NOT SHRINK, SWELL OR WARP
April 11th, 1917.
C; rail K-flWOOd AS311.,
tb reference to your cooHnunioe 4 ion of
the 7th ine , wo ^vlse you wo h» ve eel< cted red-
wood in manj ±rt* <*' m new building on a- -count of
ue resiBtaroe - lumber ha it to deu y and deter lor-
:on and c4*o oc account ctf Jte **8i eta/jce to f **J*
We r^rtlc irly selected redwoodior our elevator shaft
on account cf the well-known rajrt.'qtaoce of Ihie wood
t. ire. a «o/i: truotlorj &i . ir *l*lt IB t« ro«-
wood timbers pleoed on top ol aa«hf«fc'sr, making a eoi-
vall 6" uhie* .
I« flu<C-y r«»ema»nd this l«fl>b*r to anyone
desiring el*** 1 enlo* T con /t motion .
Tovre fir/ trtly,
cttoonu cow;, kxli^ oo.
RESISTS IRE AND ROT
f the metal doors in two that we
manufactured; the door in mention
having been in place for about eight
years, ami he, the engineer, returned
a part of it to US and a letter stating
that the door was in just a- gnnd a
condition as the dav \w manufac-
Also, another thing that T noticed
on the Redwood door- is that after
they had 1 n subjected to a fire they
are not burnt up. I could cite a num-
ber of incident-, but 1 remember one
in particular in which I went to ex-
amine the doors after a lire. I found
that the door next to the fire had been
charred possibly one-quarter of an
inch dec]). The fire did not get in any
further; in fact, it stopped, and a< 1
said, this is due to the fact that there
i- no pitch in the wood to help it burn.
\tter the hre at the Times Mirror
Company's plant (the Los Angeles
Daily Times explosion), I noticed on
ihe building across the alley there was
a shutter protecting a window open-
ing. Considering the great heat from
the explosion and fire the shutter had
fulfilled its duty much more so than
n> other protection used on the ad-
joining window. In fact, some of them
had hollow metal windows and frames
and they had gone absolutely to pieces,
but this Redwood shutter kept the tire
out of this particular opening; and
without doubt in my mind if they had
been used on the adjoining openings
they would have saved that building.
In conclusion, you can see where I
stand regarding the use of Redwood.
We will not use anything else be-
cause I deem it that our customers
r< entitled to. the best and it i- up to
IS to see that they get it.
Yours very truly,
California Fire-proof Door Co,
(Signed) Mgr. J. A. Mottashcd.
Redwoods slow ignition, slow burn-
ing and the ease with which tire is
extinguished have made it the recog-
nized material for fire doors.
Experience on the Pacific Coast
has demonstrated that a solid Red-
wood fire wall will perform its func-
tion satisfaet* >rily.
Building ordinance No. 399, of the
city of Eureka, California, is typical
of the permitted use of Redwood for
fire- wall purpose-, and reads as fol-
Sec. j. The exterior walls anil all party
walls of the buildings luded within the
district above described, shall be con-
structs! of concrete or 1 k, natural or
artificial stone, or iron or a combination of
any or all of the above described materials,
of Redwood as pro. ill by this ordi-
Sec. 3. The height of all wooden build-
ings hereafter constructed within the fire
limits shall be limited to 50 feet, from the
sidewalk grade to top of fire wall or peak
Sec. 4. All wooden buildings hereafter
erected within the fire limits of the city of
Eureka, except those built for. and used
exclusively as dwelling houses, outhouses,
and private stables, shall be constructed
with solid wall-, the same to be not less
than four inches thick in all one and two
story buildings, and in all three or more
story buildings, the tw<< upper stories -hall
be constructed with soli 1 walls of like
thickness, and the lower story or stories
shall be constructed with solid walls not
less than six inches thick. The above thick-
ness of walls to be exclusive of pla .
weather boarding or rustic.
All frame buildings with Studded walls
or where the walls are not solid, shall have
their outer walls covered with rustic or
weather boarding, and the walls of such
frame building- shall not come in contact
with, or be within twelve inches of, the
walls of any other building. Such inter-
vening space shall not be enclosed higher
than six feet from the ground.
WILL NOT SHRINK, SWELL OR WARP
Electrical Specialty V*/or\
The absence of pitch or gummy sub-
stances, its straight even grain, its
non-conductiviu . and its resistance
to fire are the features that make
Redwood preferable for electrical
mouldings and specialty work.
As Redwood is light, easy to work
and makes a satisfactory and perma-
nent joint it is in demand for the
manufacture of screens.
This applies to the fly screen as
well as special work such as screen -
for moving pictures, portable screens
for the home. etc.
The absence of pitch or raised
grain and the natural surface of the
wood lend it admirably to decorative
pur]",- . either by carving, painting.
staining, gluing or fastening mould-
Redwood screens do not shrink or
warp out of joint, and they have a
high resistance to rot, whether ex-
posed to the weather or to conditions
that would promote dry rot.
The non-conductivity of Redwood,
together with its ability to make a
tight joint, and hold the joint regard-
less of the difference in temperature
betw *n the interior and the exterior
of the tireless cooker box, are qual-
ities that give Redwood a decided
] "reference for this use.
It- light weight, ea-y working, per-
feet surface to paint, and its dur-
ability are also favorable factors.
Manufacturers of fireless cooker
can buy Redwood to advantage be-
cause it can be furnished cut to tin
sizes required at a material saving
ompared with buying regular sta\
Sta\es and Fence Posts
Because of its wonderful durability
in contact with the ground there is no
wood like Redwood for stakes and
fence posts. It is used almost exclu-
-ively in the vineyards and ranches
Enormous quantities of Redwood
stakes are set annually in the vine-
yards and hop fields of California.
These stakes are split and come in
two sizes, 2x2 in. and 6 ft. and 2 x
2 in. — 8 ft.
Redwood split posts come stand-
ard 4 inches by 5 inches and ~ feet
long. Sawn posts come in lengths of
6 feet, 7 feet and 8 feet, and 3 inche
by 4 inches, 4 inches by 4 inches and
4 inches by 6 inches.
The wonderful durability of Red-
wood in contact with the ground was
recognized by the Lincoln Highway
< ommissioners of the west when they
-elected Redwood for marking post-
for that part of the roadway be-
tween Salt Lake City and San Fran-
cisco, a distance of 1000 miles. Each
mile of this distance is to be marked
with a Redwood post.
The Highway Commission had be-
fore it a proposition to mark this
highway with boiler tubes set in a
concrete base, but it was found thai
in addition to the expensive setting-
up cost the boiler tubes could not b«
guaranteed to stand as long as the
Redwood post, which, without any
attention, is good for 25 years and
The overland traveler in an auto-
mobile is therefore welcomed to Cal-
ifornia by a thousand mih s of Red-
wood posts that guide him to the
land of "big trees," golden ri\<r-
and the most worn rful lumber in
the world — Redwood.
Re dwood is without question the best
adapted wood tor bee hives.
Its light weight, easy working and
its ability to hold tight joints regard-
less of alternating conditions in the
atmosphere, as well as its durability
without protection of preservatives,
make it a material which, when used
in the bee hive, can be depended upon
to last a life-time.
Redwood is odorless and tasteless
and has no deleterious effect on the
Ree hive stock in Redwood is ob-
tainable in cut lengths according to
In the great fruit-growing sections
if ilifornia the Redwood tray is
used for sun-drying fruits.
These trays are made of Redwood.
They are set on the ground with the
fruit in them, and are thus exposed,
during the curing process, to the hot
rays of the sun.
Setting on the moist ground they
are naturally subjected to curling or
warping on account of the conflict-
ing strain set up in the fiber of the
wood by the v arying degrees of dry-
ness on both sides — and Redwood
stands thi> -.train without sacrifice of
In addition. Redwood is light and
easy to handle.
Redwood is rapidly finding favor
among manufacturers of cigar boxes
as a suitable wood for this purpose.
In strength and color it compares
favorably with cedar, and is odorless.
. / Redwood cigar box
WILL NOT SHRINK, SWELL OR WARP
Redwood possesses the remarkable
quality of "staying put" when prop-
erly dried, regardless of atmospheric
or climatic changes or conditions, and
holds labels perfectly.
Cigar box stock should be vertical
grain, thoroughly dry and clear. It is
furnished either in flitches, or cut to
fecial *-ize for immediate use.
Redwood is recognized by the bill
posters of the United States as supe-
rior for bill -board moulding.
Bill-boards are exposed to rough
weather. and the essentials, therefore,
are a lumber of great durability un-
der varying climatic conditions, a-
well a- a surface that takes and holds
Redwood meets all these require-
Redwood is the most durable lum-
ber for bill -board purposes. It is light
in weight and easy to work. It does
not rot because of dampness between
the moulding and the bill-board.
For po>ts and backing Redwood
will last longer than the sign-board
I\ cd wood bill-boards require less
Up-keep attention and cost.
I he rapidly diminishing supply of
edar for lead pencil stock is causing
the pencil manufacturers to look for
other suitable wood-, and they find
It not onlv closely resembles cedar
in color, hut a vertical grain Red-
wood pencil can be sharpened as
readily as a cedar pencil.
Redwood pencil stock, to be entire-
1\ satisfactory, must be carefully se-
lected a-- to grain, softness and the
number of annular rings.
It is light in weight, can be thor-
oughly dried, and is a splendid wood
Pencil manufacturers in this coun-
try have been using Redwood for
many years, and large quantities are
shipped abroad for this purpose.
Hurl is not lumber — it is a lump
growth on the exterior of the tree,
usually covering a wound.
Large quantities of burl are used
for novelties, such as pipe trays,
plates, bowls, etc., and these in many
instances have left the impression,
particularly in the east, that burl is
Burl is gnarly, plentifully spotted
with small knots, hard, and takes a
high polish in imitation of mahog-
Burl does not grow on all trees,
and, as a result, it is very scarce. This
scarcity, together with the big de-
mand from novelty manufacturer^
keeps it at a big premium in the mar-
The light weight of Redwood, its
ability to make and hold a tight joint.
and the absence of shrink, swell, or
warp, regardless of atmospheric or
climatic conditions, combined with il
«asy working quality, make it espe-
cially adaptable for camera stork.
Redwood also lends itself splendid-
ly to firm gluing of camera covering.
Redwood camera boxes can alwa\
be depended upon to remain lighi
proof, and thus insure perfe* t ser-
vice by the camera.
The manufacturers of tors are turn-
ig to Redwood because it not only
affords a sentimental factor that is a
powerful influence in its sale, by rea-
son of the fact that it is wood from
the "big trees" of California, but
also because it is splendidly adapted
to such purpose.
It has light weight, smooth even
grain, will not swell or curl, is easy
rid profitable to work and has a
''right, warm color.
Redwood toys are not only a diver-
sion, but an education to the child by
reason of the fact that they awaken
n interest in the "big trees" — a sub-
ject that is familiar to every school
child in the nation.
For benches, gutters, and curbing,
plant stakes, planking, etc., because
of its natural durabilitv in contact
with the ground, Redwood is the
wood to use.
It is universally used in the parks
in the western section of the count r\ .
where Redwood is so well known.
Enormous quantities of Redwood
were used for this purpose in both
the Panama-Pacific International Ex-
position in San Francisco in 191 5,
and the Panama-California Exposi-
tion in San Diego in 1915-1916.
Redwood's adaptability to paint
makes it particularly preferable for
park benches and settees, pergolas,
porches, etc.. where the building ma-
terial must not only have durability
but a natural resistance to the
Because it does not warp and swell
Redwood is preferred for grandstand
benches and bleacher seats at base-
ball parks and athletic grounds.
Redwood park equipment insures
long life at a minimum cost.
Redwood has been used for many
years as interior finish and cabin par-
S. v " 'andbee" of the Cleveland and Buffalo Transit Company, large ship in the
world. The staterooms, partitions, eti .. and the cam as-t ■>: ered decks are of California K <od
WILL NOT SHRINK, SWELL OR WARP
titions on passenger ships, both in
this country and in England, where
millions of feet of Redwood "bulk-
heading" have been installed on fast
It is superior for ship interiors for
these reasons —
1. Its resistance to fire, and ease
in extinguishing when afire.
2. Lack of shrink, warp, or swell
due to changes in tempera-
ture or climate.
3. Redwood always looks well —
it "stays put."
4. Resistance to wet or dry rot.
5. Its extremely light weight
makes it preferred for super-
structure in boat-building,
where the center of gravity is
an important factor.
6. It is a perfect surface to take
and hold paint, stain, or
7. It has splendid adaptability
for decorative effect, because
of its smooth surface and
straight grain. Wonderful
panel effects can be achieved
in cabins 1a the use of stain
Manufacturing institutions on the
Pacific coast have used Redwood for
pattern stock for many years.
Thoroughly dry Redwood can be
depended upon to make a satisfac-
tory joint ; it i^ easy and profitable to
work, and is not affected by variation
in atmospheric conditions from
moisture to dryness. It can be de-
pended u n to hold its shape.
The pattern makers in the east are
turning to Redwood because of this
last characteristic, and I :ause it is
thorough h satisfactory to work.
Pattern lumber should be selected
for soft even grain, and it must be
thoroughly dry before using. In ad-
dition to the clear grade many pat-
tern makers use a selected high grade
of "shop" lumber which costs consid-
erably less, and in no way affects the
value of the finished pattern.
The porosity of Redwood makes it
absolutely dependable as veneer core.
The holding quality of a core de-
pends upon its absorbing power or
anchorage for glue. Kiln-dried Red-
wood is a perfect gluing surface.
In addition to Redwood's light
weight it does not deteriorate by dry
rot. even when denied ventilation. It
is virtually immune from the attack
Thoroughly seasoned Redwood
does not shrink, swell or warp, and
the core will always hold its proper
shape. A Redwood core is not af-
fected by sudden changes in temper-
ature or climatic conditions, and,
therefore, holds the veneer from
moving from the same causes.
Manufacturers using veneer in
large quantities have thoroughly in-
vestigated Redwood as a core, and
find it meets all requirements, and
particularly for such fine work as
pianos, desks, furniture, hardwood
veneer doors, panels, and so forth.
Veneer core stock is furnished in
Redwood in small pieces cut to size,
rough or built up stock.
A manufacturer of canoes in the
east is using Redwood cores be-
tween birch veener for canoes. After
considerable experimenting he finds
that Redwood is perfectly adaptable
to this use for the reason that tin
porosity of the wood affords a per-
1 t surface to glue, and also con-
tributes to lightness.